Documentary telling the story of the most devastating aerial attack in Britain's history and its aftermath. On 14th November 1940, the Luftwaffe dropped thousands of tons of bombs on Coventry, devastating three-quarters of the city centre. Initial panic and hysteria gave way to a renewed sense of purpose, and soon local factories were turning out engine parts which were used to avenge the attack, while the RAF studied the Nazi bombing techniques and used their devastating tactics against them.